12428065 has 16 divisors (see below), whose sum is σ = 16144128. Its totient is φ = 9130176.

The previous prime is 12428051. The next prime is 12428077. The reversal of 12428065 is 56082421.

12428065 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12428065 - 2¹³ = 12419873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16732 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (1009008).

Almost surely, 2^12428065 is an apocalyptic number.

It is an amenable number.

12428065 is a deficient number, since it is larger than the sum of its proper divisors (3716063).

12428065 is a wasteful number, since it uses less digits than its factorization.

12428065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 12428065 is about 3525.3460823017. The cubic root of 12428065 is about 231.6333946892.

The spelling of 12428065 in words is "twelve million, four hundred twenty-eight thousand, sixty-five".